Description of Instrument Functions Prosonic T FMU30 Ultrasonic Level Measurement BA00388F/00/EN/14.14 71244274
Short instructions Short instructions KA290F/00/A2/12.09 71106912 000 measured value Group selection 00 basic setup 01 safety settings 03 temperature 04 linearisation 05 extended calibr. 06 output 0E Envelope curve 09 display 0A diagnostics 0C system parameter 002 tank shape - dome ceiling - horizontal cyl. - bypass 0E1 plot settings 092 language 0A0 present error 0C0 tag no. 003 medium property - unknown - liquid ->4mm (> 0.16 in) -<4mm ( < 0.16 in) 0E2 recording curve Prosonic T - Quick Setup 0A1 previous error 004 process cond. - standard - calm surface input E (see sketch) input F (see sketch) - add. agitator 0A3 reset 333 005 empty calibr. 006 full calibr. 0A4 unlock parameter 100 008 dist./ meas value D and L are displayed (see sketch) BD E 051 check distance -ok - too small - too big - unknown - manual F SD and and 052 range of mapping confirm suggestion or specify range : increase contrast : decrease contrast 008 dist./ meas value 053 start mapping D L 100% 0% BD: blocking distance SD: safety distance 71106912 Contents of the operating instructions This operating instructions contain all functions off the Prosonic T FMU30 operating menu. Information on mounting, wiring, trouble shooting and maintenance can be found in the document BA00387F/00/EN. These documents can be found on the CD-ROM "Device Desriptions + Documentation". 2 Endress+Hauser
Prosonic T Table of contents Table of contents 1 Notes on use.................... 5 1.1 Using the table of contents to locate a function description............................... 5 1.2 Using the graphic of the function menu to locate a function description......................... 5 1.3 Using the index of the function menu to locate a function description......................... 5 2 Function menu................. 13 3 Function group "basic setup" (00)... 15 3.1 Function "measured value" (000).............. 15 3.2 Function "tank shape" (002)................. 15 3.4 Function "process cond." (004)............... 16 3.6 Function "blocking dist." (059)............... 18 3.8 Display (008)............................ 19 3.10 Function "range of mapping" (052)............ 21 3.11 Funktion "start mapping" (053)............... 21 4 Function group "safety settings" (01). 23 4.1 Function "output on alarm" (010)............. 23 4.2 Function "output on alarm" (011)............. 24 4.4 Function "ramp %span/min" (013)............ 26 4.5 Function "delay time" (014).................. 26 4.7 Function "in safety dist." (016)................ 27 5 Function group "temperature" (03).. 31 5.1 Function "measured temp." (030)............. 31 5.2 Function "max. temp. limit" (031)............. 31 5.3 Function "max. meas. temp." (032)............ 31 5.5 Function "defect temp. sens." (034)............ 32 6 Function group "linearisation" (04).. 33 6.1 Function "level/ullage" (040)................. 33 6.5 Function "input level" (044).................. 39 6.7 Function "max. scale" (046).................. 40 6.8 Function "diameter vessel" (047).............. 40 7 Function group "extended calibr." (05). 41 7.1 Function "selection" (050)................... 41 7.2 Function "check distance" (051).............. 41 7.3 Function "range of mapping" (052)............ 42 7.4 Function "start mapping" (053)............... 42 7.5 Function "pres. map dist." (054)............... 43 7.7 Function "echo quality" (056)................ 44 7.8 Function "offset" (057)..................... 45 7.9 Function "output damping" (058).............. 45 7.10 Function "blocking dist." (059)............... 45 8 Function group "output" (06)....... 47 8.1 Function "thres. main val." (062).............. 47 8.2 Function "curr. output mode" (063)............ 47 8.3 Function "fixed cur. value" (064).............. 48 8.5 Function "simulation value" (066)............. 50 8.6 Function "output current" (067)............... 50 8.7 Function "4mA-value" (068)................. 50 8.8 Function "20mA-value" (069)................ 50 9 Function group "Envelope curve" (0E) 51 9.1 Function "plot settings" (0E1)................. 51 9.2 Function "recording curve" (0E2).............. 51 10 Function group "display" (09)....... 55 10.1 Function "language" (092)................... 55 10.2 Function "back to home" (093)............... 55 10.4 Function "no.of decimals" (095)............... 56 10.5 Function "sep. character" (096)............... 56 10.6 Function "display test" (097)................. 56 11 Function group "diagnostics" (0A)... 57 11.2 Function "previous error" (0A1)............... 58 11.3 Function "clear last error" (0A2)............... 58 11.6 Function "measured dist." (0A5)............... 61 11.7 Function "measured level" (0A6).............. 61 11.8 Function "detection window" (0A7)............ 62 12 Function group "system parameters" (0C) 65 12.1 Function "tag no." (0C0).................... 65 12.2 Function "protocol+sw-no." (0C2)............. 65 12.3 Function "serial no." (0C4)................... 65 12.5 Function "temperature unit" (0C6)............. 66 13 Function group "service" (0D)....... 69 14 Signal evaluation................. 71 14.1 Envelope curve........................... 71 15 Trouble shooting................. 75 15.1 System error messages...................... 75 Index function menu.................. 79 Endress+Hauser 3
Table of contents 4 Endress+Hauser
1 Notes on use 1 Notes on use You have various options for accessing the descriptions of instrument functions or how to enter parameters. 1.1 Using the table of contents to locate a function description All the functions are listed in the table of contents sorted by function group (e.g. basic setup, safety settings, etc.). You can access a more detailed description of a function by using a page reference / link. The table of contents is on ä 3. 1.2 Using the graphic of the function menu to locate a function description This guides you step by step from the highest level, the function groups, to the exact function description you require. All the available function groups and instrument functions are listed in the table ( ä 79). Select your required function group or function. You can access an exact description of the function group or function by using a page reference. 1.3 Using the index of the function menu to locate a function description To simplify navigation within the function menu, each function has a position which is shown in the display. You can access each function via a page reference in the function menu index ( ä 79) which lists all the function names alphabetically and numerically. Endress+Hauser 5
1 Notes on use 1.4 General structure of the operating menu The operating menu is made up of two levels: Function groups (00, 01, 03,, 0A, 0C): The individual operating Selection of the instrument are split up roughly into different function groups. The function groups that are available include, e.g.: "basic setup", "safety settings", "output", "display", etc. Functions (001, 002, 003,, 0A6, 0C8): Each function group consists of one or more functions. The functions perform the actual operation or parameterisation of the instrument. Numerical values can be entered here and parameters can be selected and saved. The available functions of the basic setup (00) function group include, e.g.: "tank shape (002)", "medium property (003)", "process cond. (004)", "empty calibr. (005)", etc. If, for example, the application of the instrument is to be changed, carry out the following procedure: 1. Select the basic setup (00) function group. 2. Select the "tank shape (002)" function (where the existing tank shape is selected). 1.4.1 Identifying the functions For easy orientation within the function menus, for each function a position is shown on the display. empty calibr. 005 6.500 m distance membrane to min. level 1 Function group 2 Function The first two digits identify the function group: basic setup 00 safety settings 01 temperature 03 1 2 The third digit numbers the individual functions within the function group: basic setup 00 tank shape 002 medium property 003 process cond. 004 Hereafter the position is always given in brackets (e.g. "tank shape" (002)) after the described function. 6 Endress+Hauser
1 Notes on use 1.5 Display and operating elements 1 2 FEU31 4...20mA - + % Display E 4 3 1: Display symbol 2: Display (rotatable) 3: Plug-in module 4: Function keys Endress+Hauser 7
1 Notes on use 1.5.1 Display Liquid crystal display (LCD): Four lines with 20 characters each. Display contrast adjustable through key combination. measured value display 1 2 3 4 5 6 1. label 2. symbol 3. value 4. bargraph 5. unit 6. position in menu group selection 1. selection list 1 Function with free parameter 1 3 1. label 2. help texts 3. position in menu 2 envelope curve 1. envelope curve 1 In the measured value display, the bargraph corresponds to the output. The bargraph is segmented in 10 bars. Each completely filled bar represents a change of 10% of the adjusted span. 8 Endress+Hauser
1 Notes on use 1.5.2 Display symbols The following table describes the symbols that appear on the liquid crystal display: Symbols Meaning ALARM_SYMBOL This alarm symbol appears when the instrument is in an alarm state. If the symbol flashes, this indicates a warning. LOCK_SYMBOL This lock symbol appears when the instrument is locked,i.e. if no input is possible. 1.5.3 Key assignment The operating elements are located inside the housing and are accessible for operation by opening the lid of the housing. Function of the keys (The keys to press are displayed in grey.) Navigate upwards in the selection list Edit numeric value within a function Navigate downwards in the selection list Edit numeric value within a function Navigate to the left within a function group Navigate to the right within a function group, confirmation. or Contrast settings of the LCD Hardware lock / unlock After a hardware lock, an operation of the instrument via display or communication is not possible! The hardware can only be unlocked via the display. An unlock parameter must be entered to do so. Endress+Hauser 9
1 Notes on use 1.5.4 Operation % 2x......... >3 s Selection and configuration in Operation menu: 1.) Change from Measured Value Display to Group Selection by pressing E 2.) Press - or + to select the required Function Group (e.g. "basic setup (00)") and confirm by pressing E First function (e.g. "tank shape (002)") is selected. Note! The active selection is marked by a in front of the menu text. 3.) Activate Edit mode with + or -. Selection menus: a) Select the required Parameter in selected function (e.g. "tank shape (002)") with - or +. b) E confirms selection appears in front of the selected parameter c) E confirms the edited value system quits Edit mode d) + / - interrupts selection system quits Edit mode Typing in numerals and text: a) Press + or -to edit the first character of the numeral / text (e.g. "empty calibr. (005)") b) E positions the cursor at the next character continue with (a) until you have completed your input c) if a symbol appears at the cursor, press E to accept the value entered system quits Edit mode d) if a symbol appears at the cursor, press E to return to the previous character (e.g. for correction of entries) e) + / - interrupts the input, system quits Edit mode 4) Press E to select the next function (e.g. "medium property (003)") 5) Press + / - Press + / - 6) Press + / - once return to previous function (e.g. "tank shape (002)") twice return to Group selection to return to Measured value display 10 Endress+Hauser
1 Notes on use 1.6 Commissioning 1.6.1 Switching on the measuring device When the instrument is switched on for the first time, the following messages appear on the display. Then the following appear for approximately five seconds: Device type Software version After 5 s or after you have pressed E the following message appears Select the language (this message appears the first time the instrument is switched on) Select the basic unit (this message appears the first time the instrument is switched on) The current measured value is displayed After E is pressed, you reach the group selection. This selection enables you to perform the basic setup Endress+Hauser 11
1 Notes on use 12 Endress+Hauser
2 Function menu 2 Function menu Function group Function Description basic setup 00 measured value 000 ä 15 ( ä 15) tank shape 002 ä 15 medium property 003 ä 16 process cond. 004 ä 16 empty calibr. 005 ä 18 blocking dist. 059 ä 18 full calibr. 006 ä 19 display 008 ä 19 check distance 051 ä 20 range of mapping 052 ä 21 start mapping 053 ä 21 display 008 ä 22 safety settings 01 output on alarm 010 ä 23 ( ä 23) output on alarm 011 ä 24 outp. echo loss 012 ä 25 ramp %span/min 013 ä 26 delay time 014 ä 26 safety distance 015 ä 27 in safety dist. 016 ä 27 ackn. alarm 017 ä 29 temperature 03 measured temp. 030 ä 31 ( ä 31) max. temp. limit 031 ä 31 max. meas. temp. 032 ä 31 react high temp. 033 ä 32 defect temp. sens. 034 ä 32 linearisation 04 level/ullage 040 ä 33 ( ä 33) linearisation 041 ä 34 customer unit 042 ä 38 table no. 043 ä 39 input level 044 ä 39 input volume 045 ä 40 max. scale 046 ä 40 diameter vessel 047 ä 40 extended calibr. 05 selection 050 ä 41 ( ä 41) check distance 051 ä 41 range of mapping 052 ä 42 start mapping 053 ä 42 pres. map dist. 054 ä 43 cust. tank map 055 ä 44 echo quality 056 ä 44 offset 057 ä 45 output damping 058 ä 45 blocking dist. 059 ä 45 Endress+Hauser 13
2 Function menu Function group Function Description output 06 thres. main val. 062 ä 47 (see ä 47) current output mode 063 ä 47 fixed cur. value 064 ä 48 simulation 065 ä 49 simulation value 066 ä 50 output current 067 ä 50 4 ma value 068 ä 50 20 ma value 069 ä 50 envelope 0E plot settings 0E1 ä 51 ( ä 51) recording curve 0E2 ä 51 envelope curve display 0E3 ä 52 display 09 language 092 ä 55 (see ä 55) back to home 093 ä 55 format display 094 ä 56 no.of decimals 095 ä 56 sep. character 096 ä 56 display test 097 ä 56 diagnostics 0A present error 0A0 ä 58 (see ä 57) previous error 0A1 ä 58 clear last error 0A2 ä 58 reset 0A3 ä 59 unlock parameter 0A4 ä 60 measured dist. 0A5 ä 61 measured level 0A6 ä 61 detection window 0A7 ä 62 application par. 0A8 ä 63 system parameter 0C tag no. 0C0 ä 65 (see ä 65) protocol+sw-no. 0C2 ä 65 serial no. 0C4 ä 65 distance unit 0C5 ä 66 temperature unit 0C6 ä 66 download mode 0C8 ä 67 service D00 service level D00 ä 69 14 Endress+Hauser
3 Function group "basic setup" (00) 3 Function group "basic setup" (00) 3.1 Function "measured value" (000) This function displays the current measured value in the selected unit (see "customer unit" (042) function). The number of places after decimal point can be selected in the "no.of decimals" (095) function. 3.2 Function "tank shape" (002) This function is used to select the tank shape. Selection A B C D E F A B C D E F dome ceiling horizontal cyl. bypass, stilling well/ultrasonic guide pipe no ceiling, e.g. dumps, open levels, chanels, weirs sphere flat ceiling Endress+Hauser 15
3 Function group "basic setup" (00) 3.3 Function "medium property" (003) This function is used to set the medium properties: unknown (e.g. pasty media such as greases, creams, gels etc.) liquid solid, grain size < 4mm, (fine) solid, grain size > 4mm, (coarse) 3.4 Function "process cond." (004) This function is used to select the process conditions. Selection: standard liquids calm surface turb. surface For all fluid applications which do not fit in any of the following groups. Storage tanks with immersion tube or bottom filling Storage / accumulation tanks with uneven surface due to free filling, mixing nozzles or small bottom stirrers The filters and output damping are set to average values. The averaging filters and output damping are set to large values. -> Stable measured value -> Accurate measurement -> Slow reaction time Special filters for stabilising the input signal are activated. -> Stable measured value -> Medium reaction time 16 Endress+Hauser
3 Function group "basic setup" (00) add. agitator fast change standard solid Moving surfaces (poss. with vortex formation) due to agitators Rapid level change, particularly in small tanks For all bulk solids applications which do not fit in any of the following groups. Special filters for stabilising the input signal are set to large values. -> Stable measured value -> Medium reaction time The averaging filters are set to small values. -> Rapid reaction time -> Possibly unstable measured value The filter and output damping are set to average values. solid dusty conveyor belt Test: no filter Dusty bulk solids Bulk solids with rapid level change All the filters can be switched off for purposes of service and diagnosis. The filters are set to detect even relatively weak signals. The averaging filters are set to small values. -> Rapid reaction time -> Possibly unstable measured value All filters off Endress+Hauser 17
3 Function group "basic setup" (00) 3.5 Function "empty calibr." (005) This function is used to enter the distance from the sensor membrane (reference point of the measurement) to the minimum level (=zero). 100% E 0% " E: empty calibration Caution! For dish bottoms or conical outlets, the zero point should be no lower than the point at which the radar beam hits the bottom of the tank. 3.6 Function "blocking dist." (059) In this function the blocking distance is displayed. Level echoes within the blocking distance can not be detected by the Instrument. Make sure that the maximum level will never run into the blocking distance. 18 Endress+Hauser
3 Function group "basic setup" (00) 3.7 Function "full calibr." (006) This function is used to enter the distance from the minimum level to the maximum level (=span). SD BD 100% F 0% F: full calibration (span); BD: blocking distance; SD: safety distance Caution! The maximum level may not project into the blocking distance (BD). If the blocking distance is compromised, it may cause device malfunction. After basic calibration, enter a safety distance (SD) in the "safety distance" (015) function. If the level is within this safety distance, the instrument signals a warning or an alarm, depending on your selection in the "in safety distance" (016) function. 3.8 Display (008) The distance measured from the sensor membrane to the product surface and the level calculated with the aid of the empty calibration are displayed. Check whether the values correspond to the actual level or the actual distance. The following cases can occur: Distance correct level correct -> continue with the next function, "check distance" (051) Distance correct level incorrect -> Check "empty calibr." (005) Distance incorrect level incorrect -> continue with the next function, "check distance" (051) Endress+Hauser 19
3 Function group "basic setup" (00) 3.9 Function "check distance" (051) This function triggers the mapping of interference echoes. To do so, the measured distance must be compared with the actual distance to the product surface. The following options are available for selection: Selection: distance = ok dist. too small dist. too big dist. unknown manual distance too small distance = ok + + distance = ok mapping is carried out up to the currently measured echo The range to be suppressed is suggested in the "range of mapping (052)" function Anyway, it is wise to carry out a mapping even in this case. dist. too small At the moment, an interference is being evaluated Therefore, a mapping is carried out including the presently measured echoes The range to be suppressed is suggested in the "range of mapping (052)" function dist. too big This error cannot be remedied by interference echo mapping Check the application parameters (002), (003), (004) and "empty calibr." (005) dist. unknown If the actual distance is not known, no mapping can be carried out. " manual A mapping is also possible by manual entry of the range to be suppressed. This entry is made in the "range of mapping (052)" function. Caution! The range of mapping must end 0.3 m (1 ft) before the echo of the actual level. For an empty tank, do not enter E, but E 0.3 m. 20 Endress+Hauser
3 Function group "basic setup" (00) 3.10 Function "range of mapping" (052) This function displays the suggested range of mapping. The reference point is always the sensor membrane. This value can be edited by the operator. For manual mapping, the default value is: 0 m. 3.11 Funktion "start mapping" (053) This function is used to start the interference echo mapping up to the distance given in "range of mapping" (052). Selection: off: no mapping is carried out on: mapping is started! Note! If a mapping already exists, it is overwriten up to the distance specified in "range of mapping" (052). Beyond this value the existing mapping remains unchanged. Endress+Hauser 21
3 Function group "basic setup" (00) 3.12 Display (008) The distance measured from the reference point to the product surface and the level calculated with the aid of the empty alignment are displayed again. Check whether the values correspond to the actual level or the actual distance. The following cases can occur: Distance correct level correct basic setup completed Distance incorrect level incorrect a further interference echo mapping must be carried out "check distance" (051). Distance correct level incorrect check "empty calibr." (005) After 3 s, the following message appears! Note! After the basic setup, an evaluation of the measurement with the aid of the envelope curve ("display" (09) function group) is recommended. 22 Endress+Hauser
4 Function group "safety settings" (01) 4 Function group "safety settings" (01) 4.1 Function "output on alarm" (010) This function is used to select the reaction of the device on an alarm. Selection: MIN (<= 3.6mA) MAX (22mA) hold user specific MIN ( 3.6 ma) [ma] 22 (110%) 3.6 (2.4) (-10%) t If the instrument is in alarm state, the output changes as follows: MIN-Alarm 3.6mA MAX (22mA) [ma] 22 (110%) 3.6 (-10%) t If the instrument is in alarm state, the output changes as follows: MAX-Alarm 22mA Endress+Hauser 23
4 Function group "safety settings" (01) hold [ma] 22 (110%) hold ho 3.6 (-10%) t If the instrument is in alarm state, the last measured value is held. user specific [ma] 22 (110%) xma 3.6 (-10%) t If the instrument is in an alarm state, the output is set to the value configured in "output on alarm" (011) (x ma). 4.2 Function "output on alarm" (011) The current (in ma) which will be output in case of an alarm. This function is active when you selected "user specific" in the "output on alarm" (010) function. 24 Endress+Hauser
4 Function group "safety settings" (01) 4.3 Function "outp. echo loss" (012) Use this function to set the output response on echo loss. Selection: alarm hold ramp %/min alarm On echo loss, the instrument switches to alarm state after an adjustable "delay time" (014). The output response depends on the configuration set in "output on alarm" (010). hold On echo loss, a warning is generated after a definable "delay time" (014). Output is held. Endress+Hauser 25
4 Function group "safety settings" (01) ramp %/min On echo loss, a warning is generated after a definable "delay time" (014). The output is changed towards 0% or 100% depending on the slope defined in "ramp %span/min" (013). 4.4 Function "ramp %span/min" (013) Ramp slope which defines the output value on echo loss. This value is used if "ramp %span/min" is selected in "outp. echo loss" (012). The slope is given in % of the measuring range per minute. 4.5 Function "delay time" (014) Use this function to enter the delay time (Default = 60 s) after which a warning is generated on echo loss, or after which the instrument switches to alarm state. 26 Endress+Hauser
4 Function group "safety settings" (01) 4.6 Function "safety distance" (015) A configurable safety distance is placed before the "blocking dist." (059) ( ä 45). This distance warns you that any further level increase would make the measurement invalid, because the blocking distance would be compromised. blocking dist. (BD) safety distance (SD) Enter the size of the safety distance here. The default value is: 0.1 m (0.32 ft). 4.7 Function "in safety dist." (016) This function defines the response when the level enters the safety distance. Selection: alarm warning self holding alarm Instrument enters the defined alarm state ("output on alarm" (011)). The alarm message E651 - "level in safety distance - risk of overspill" is displayed. Endress+Hauser 27
4 Function group "safety settings" (01) If the level drops out of the safety distance, the alarm warning disappears and the instrument starts to measure again. warning [ma] 22 SD WARNING 110% 3.6-10% t Instrument displays a warning E651 -"level in safety distance - risk of overspill", but continues to measure. If the level leaves the safety distance, the warning disappears. self holding Instrument switches to defined alarm state ("output on alarm" (011)). The alarm message E651 - "level in safety distance - risk of overspill" is displayed. If the level leaves the safety distance, the measurement continues only after a reset of the self holding (function: "ackn. alarm" (017)). 28 Endress+Hauser
4 Function group "safety settings" (01) 4.8 Function "ackn. alarm" (017) This function acknowledges an alarm in case of "self holding". Selection: no yes no The alarm is not acknowledged. yes Acknowledgement takes place. After 3 s, the following message appears Endress+Hauser 29
4 Function group "safety settings" (01) 30 Endress+Hauser
5 Function group "temperature" (03) 5 Function group "temperature" (03) 5.1 Function "measured temp." (030) In this function the temperature at the sensor is displayed. The temperature unit is determined by the function "temperature unit" (0C6). 5.2 Function "max. temp. limit" (031) In this function the maximum permitted temperature of the sensor is displayed. The temperature unit is determined by the function "temperature unit" (0C6). If this temperature is exceeded, the sensor may become damaged. 5.3 Function "max. meas. temp." (032) In this function the maximum temperature, which has ever been measured at the senosr, is displayed. The temperature unit is determined by the function "temperature unit" (0C6). This function is not influenced by a reset of the parameters. Endress+Hauser 31
5 Function group "temperature" (03) 5.4 Function "react high temp." (033) In this function you determine, how the instrument will react if the maximum permitted temperature of the sensor is exceeded. You may choose one of the following options: Warning The instrument continues measuring. An error message is displayed. Alarm The current output adopts the value defined in the function "output on alarm" (010). Additionally an error message is displayed. 5.5 Function "defect temp. sens." (034) In this function you determine, how the instrument will react, if the maximum permitted temperature of the sensor is exceeded. You may choose one of the following options: Alarm The current output adopts the value defined in the function "output on alarm" (010). Additionally an error message is displayed. Warning The instrument continues measuring. An error message is displayed. 32 Endress+Hauser
6 Function group "linearisation" (04) 6 Function group "linearisation" (04) 6.1 Function "level/ullage" (040) Selection: level CU level DU ullage CU ullage DU level CU Level in customer units. The measured value can be linearised. The "linearisation" (041) default value is set to a linear 0...100%. level DU Level in the selected "distance unit" (0C5). ullage CU Ullage in customer units. The value can be linearised. The "linearisation" (041) default value is set to a linear 0...100%. ullage DU Ullage in the selected "distance unit" (0C5).! Note! Reference point for the ullage is "full calibr." (=span). 20 ma 100% ullage level 4mA 0% Endress+Hauser 33
6 Function group "linearisation" (04) 6.2 Function "linearisation" (041) Linearisation defines the ratio of level to container volume or product weight and allows a measurement in customer units, e.g. metres, hectolitres etc. The measured value in (000) is then displayed in the selected unit. This function is used to select the linearisation modes. Selection: linear horizontal cyl manual semi-automatic table on clear table linear The tank is linear e.g. a cylindrical vertical tank. You can measure in customer units by entering a maximum volume/weight. You can select the "customer unit" (042). Define the volume value corresponding to the calibration in "max. scale" (046). This value corresponds to an output of 100% (= 20 ma). 20 ma 100% 4 0% ma kg, m 3,ft 3,... = customer unit (042) max.scale (046) 34 Endress+Hauser
6 Function group "linearisation" (04) horizontal cyl The volume, mass etc. are calculated automatically in cylindrical horizontal tanks by entering the "diameter vessel" (047), the "customer unit" (042) and the "max. scale" (046). The "max. scale" (046) corresponds to an output of 100% (= 20 ma). 20 ma 100% diameter vessel (047) 4 ma 0% max.scale (046) kg, m 3,ft 3,... = customer unit (042) manual If the level is not proportional to the volume or weight within the set measuring range, you can enter a linearisation table in order to measure in customer units. The requirements are as follows: The 32 (max.) value pairs for the linearisation curve points are known. The level values must be given in ascending order. The curve is monotonously increasing. The level heights for the first and last points on the linearisation curve correspond to empty and full calibration respectively. The linearisation takes place in the basic setup unit ("distance unit" (0C5)). 20 ma 100% (3) (2) 4 ma 0% (4) kg, m 3,ft 3,... = customer unit (042) Each point (2) in the table is described by a value pair: level (3) and, for example, volume (4). The last value pair defines the 100% output (= 20 ma).! Note! The manual linearisation mode can also be used for flow measurements. To do this, simply enter the respective flow level (instead of the volume) into the table. You can find the appropriate flow values in the Q/h table of your channel or weir. Endress+Hauser 35
6 Function group "linearisation" (04) Select the table point (Point 1). Enter the level belonging to Point 1. Enter the corresponding volume. Enter a further table point? Next table point.... Continue until "next point" (045) is answered with no.! Note! After making entries into the table, activate it with "table on". The 100% value (=20 ma) is defined by the last point in the table. Before confirming 0.00 m as the level or 0.00% as the volume, activate the Edit mode with + or -. Entries can be made into the linearisation table in FieldCare using the table editor. You can also display the contents graphically. 36 Endress+Hauser
6 Function group "linearisation" (04) semi-automatic The tank is filled in stages when the linearisation curve is entered semi-automatically. The instrument automatically detects the level and the corresponding volume/weight has to be entered. The procedure is similar to manual table entry, where the level value for each table point is given automatically by the instrument.! Note! If the tank is emptied (out litres), pay attention to the following points: The number of points must be known in advance. The first table number = (32 - number of points). Entries in "Tab. no." (043) are made in reverse order (last entry = 1). table on An entered linearisation table only becomes effective when activated. clear table Before making entries into the linearisation table, any existing tables must be deleted. The linearisation mode automatically switches to linear.! Note! A linearisation table can be deactivated by selecting "linear" or "horizontal cyl" (or the "level/ ullage" (040) function = "level DU", "ullage DU"). It is not deleted and can be reactivated at any time by selecting "table on". Endress+Hauser 37
6 Function group "linearisation" (04) 6.3 Function "customer unit" (042) You can select the customer unit with this function. Selection: % Volume: l, hl, m3, dm3, cm3, ft3, usgal, i gal Weight: kg, t, lb, ton Length: m, ft, mm, inch Flow: l/s, l/min, l/h, m3/s, m3/min, m3/h, ft3/s, gal/s, gal/m, gal/hr, mgal/d, igal/s, igal/ min, igal/h Dependence The units of the following parameters are changed: measured value (000) input volume (045) max. scale (046) simulation value (066) 38 Endress+Hauser
6 Function group "linearisation" (04) 6.4 Function "table no." (043) Position of the value pair in the linearisation table. Dependence Updates "input level" (044), "input volume" (045). 6.5 Function "input level" (044) You can enter the level for each point of the linearisation curve with this function. When the linearisation curve is entered semi-automatically, the instrument detects the level automatically. User input: Level in "distance unit" (0C5). Endress+Hauser 39
6 Function group "linearisation" (04) 6.6 Function "input volume" (045) Specify the volume for each point of the linearisation curve with this function. User input: Volume in "customer unit" (042). 6.7 Function "max. scale" (046) You can enter the end value of the measuring range with this function. This input is necessary if you selected "linear" or "horizontal cyl" in the "linearisation" (041) function. 6.8 Function "diameter vessel" (047) Enter the tank diameter with this function. This entry is necessary if you selected "horizontal cyl" in the "linearisation" (041) function. 40 Endress+Hauser
7 Function group "extended calibr." (05) 7 Function group "extended calibr." (05) 7.1 Function "selection" (050) Select the function of the extended calibration. Selection: common leads to the functions "echo quality" (056), "offset" (057), "output damping" (058) and "blocking distance" (059) mapping leads to the functions for an interference echo suppression (tank map): (051)... (053) extended map leads to the functions " pres. map. dist." (054) and "cust. tank map" (055) 7.2 Function "check distance" (051) This function triggers the mapping of interference echoes. To do so, the measured distance must be compared with the actual distance to the product surface. The following options are available for selection: Selection: distance = ok dist. too small dist. too big dist. unknown manual distance too small distance = ok + Endress+Hauser 41 +
7 Function group "extended calibr." (05) distance = ok mapping is carried out up to the currently measured echo The range to be suppressed is suggested in the "range of mapping (052)" function Anyway, it is wise to carry out a mapping even in this case. dist. too small At the moment, an interference is being evaluated Therefore, a mapping is carried out including the presently measured echoes The range to be suppressed is suggested in the "range of mapping (052)" function dist. too big This error cannot be remedied by interference echo mapping Check the application parameters (002), (003), (004) and "empty calibr." (005) dist. unknown If the actual distance is not known, no mapping can be carried out. " manual A mapping is also possible by manual entry of the range to be suppressed. This entry is made in the "range of mapping (052)" function. Caution! The range of mapping must end 0.3 m (1 ft) before the echo of the actual level. For an empty tank, do not enter E, but E 0.3 m. 7.3 Function "range of mapping" (052) This function displays the suggested range of mapping. The reference point is always the sensor membrane. This value can be edited by the operator. For manual mapping, the default value is: 0 m. 7.4 Function "start mapping" (053) This function is used to start the interference echo mapping up to the distance given in "range of mapping" (052). " Selection: off: no mapping is carried out on: mapping is started Caution! If a mapping already exists, it is overwriten up to the distance specified in "range of mapping" (052). Beyond this value the existing mapping remains unchanged. 42 Endress+Hauser
7 Function group "extended calibr." (05) 7.5 Function "pres. map dist." (054) Displays the distance up to which a mapping has been recorded. A value of 0 indicates that no mapping was recorded so far. pres. map dist. (054) Endress+Hauser 43
7 Function group "extended calibr." (05) 7.6 Function "cust. tank map" (055) This function displays the evaluation mode using the customer tank map. Selection: inactive active reset inactive No tank mapping has been recorded, or map is switched off. Evaluation is only using FAC ( ä 73). active Evaluation is using the customer tank map ( ä 72). reset Deletes the complete tank map. 7.7 Function "echo quality" (056) 20 ma 100% 4mA 0% echo quality The echo quality is the benchmark for measurement reliability. It describes the amount of reflected energy and depends primarily on the following conditions: Surface characteristics (waves, foam etc.) Distance between sensor and product Low values increase the probability that the echo is lost through a change in measurement conditions, e.g. turbulent surface, foam, large measuring distance. 44 Endress+Hauser
7 Function group "extended calibr." (05) 7.8 Function "offset" (057) This function corrects the measured level by a constant value. The entered value is added to the measured level. 7.9 Function "output damping" (058) Influences the time an output requires to react to a sudden level jump (63% of steady state). A high value attenuates, for example, the influences of rapid changes on the measured variable. User input: 0...255 s The default value depends on the selected application parameters "tank shape" (002), "medium property" (003) and "process cond." (004). 7.10 Function "blocking dist." (059) In this function the blocking distance is displayed. Level echoes within the blocking distance can not be detected by the instrument. Make sure that the maximum level will never run into the blocking distance. After 3 s, the following message appears Endress+Hauser 45
7 Function group "extended calibr." (05) 46 Endress+Hauser
8 Function group "output" (06) 8 Function group "output" (06) 8.1 Function "thres. main val." (062) The output of negative level values can be suppressed with this function. Selection: off:minimum output -10% (3.8 ma) on:minimum output 0% (4 ma) 8.2 Function "curr. output mode" (063) In this function you specify the mode of the current output. You may choose one of the following options: [ma] 20 [ma] 20 curr. turn down standard fixed current 4 4 0 100 [%] 0 100 [%] Endress+Hauser 47
8 Function group "output" (06) standard The total measuring range (0... 100%) will be mapped to the current intervall (4... 20 ma). curr. turn down Only a part of the measuring range will be mapped to the current intervall (4... 20 ma). Use the functions "4-mA-value" (068) and "20-mA-value" (069) to define the concerning range. fixed current The current is fixed. The value of the current is defined in the "fixed current" (064) function. 8.3 Function "fixed cur. value" (064) Set the fixed current value with this function. This entry is necessary when you have switched on the "fixed current" (063) function. User input: 3,8...20,5 ma 48 Endress+Hauser
8 Function group "output" (06) 8.4 Function "simulation" (065) If necessary, linearisation, the output signal and the current output can be tested with the simulation function. You have the following simulation options: Selection: sim. off sim. level sim. volume sim. current sim. level D A sim. volume 0...100% 4...20 ma sim. current sim. off Simulation is switched off. sim. level Enter the level value in "simulation value" (066). The functions measured value (000) measured level (0A6) output current" (067) follow the entered values. sim. volume Enter the volume value in "simulation value" (066). The functions measured value (000) output current" (067) follow the entered values. sim. current Enter the current value in "simulation value" (066). The function output current" (067) follows the entered values. Endress+Hauser 49
8 Function group "output" (06) 8.5 Function "simulation value" (066) After selecting the "sim. level" option in the "simulation" (065) function, the following message appears in the display: you can enter the level. After selecting the "sim. volume" option in the "simulation" (065) function, the following message appears in the display: you can enter the volume. After selecting the "sim. current" option in the "simulation" (065) function, the following message appears in the display: Enter the output current. 8.6 Function "output current" (067) Displays the output current in ma. 8.7 Function "4mA-value" (068) In this function specify the level (or volume, weight, flow resp.), at which the output current should be 4 ma. This value will be used if you choose the option "curr. turn down" in the "current output mode" (063) function. 8.8 Function "20mA-value" (069) In this function specify the level (or volume, weight, flow resp.), at which the output current should be 20 ma. This value will be used if you choose the option "curr. turn down" in the "current output mode" (063) function. 50 Endress+Hauser
9 Function group "Envelope curve" (0E) 9 Function group "Envelope curve" (0E) 9.1 Function "plot settings" (0E1) Here select which information is displayed in the LCD: envelope curve env.curve+fac (on FAC see ä 73) env.curve+cust.map (i.e. customer tank map is also displayed, see ä 72) 9.2 Function "recording curve" (0E2) This function defines whether the envelope curve is read as a single curve or cyclic.! Note! If the cyclical envelope curve is active in the display, the measured variable is refreshed in a slower cycle time. It is therefore recommended to exit the envelope curve display after optimising the measuring point. Endress+Hauser 51
9 Function group "Envelope curve" (0E) 9.3 Function "envelope curve display" (0E3) The envelope curve is displayed in this function. You can use it to obtain the following information: full calibr. quality of evaluated echo evaluated echo is marked envelope curve only empty calibr. minimum distance of the plot distance of evaluated echo maximum distance of the plot map interference echo level echo envelope curve and interference echo suppression (map) Navigating in the envelope curve display Using navigation, the envelope curve can be scaled horizontally and vertically and shifted to the left or the right. The active navigation mode is indicated by a symbol in the top left hand corner of the display. Horizontal Zoom mode: - horizontal zoom in - horizontal zoom out Move mode: - moved to the left - moved to the right Vertical Zoom mode: - vertical zoom (4 steps) 52 Endress+Hauser
9 Function group "Envelope curve" (0E) Horizontal Zoom mode Firstly, go into the envelope curve display (see ä 33). Then press + or - to switch to the envelope curve navigation. You are then in Horizontal Zoom mode. Either or is displayed. You now have the following options: + increases the horizontal scale. - reduces the horizontal scale. Move mode Then press E to switch to Move mode. Either or is displayed. You now have the following options: + shifts the curve to the right. - shifts the curve to the left. Vertical Zoom mode Press E once more to switch to Vertical Zoom mode. is displayed. You now have the following options: + increases the vertical scale. - reduces the vertical scale. The display icon shows the current zoom factor ( to ). Exiting the navigation Press E again to run through the different modes of the envelope curve navigation. Press + and - to exit the navigation. The set increases and shifts are retained. Only when you reactivate the "recording curve" (0E2) function does the instrument use the standard display again. Endress+Hauser 53
9 Function group "Envelope curve" (0E) 54 Endress+Hauser
10 Function group "display" (09) 10 Function group "display" (09) 10.1 Function "language" (092) Selects the display language. Selection: English Deutsch Français Español Italiano Nederlands Japanese Dependence All texts are changed. 10.2 Function "back to home" (093) If no entry is made using the display during the specified time period, the display returns to the measured value display. 9999 s means that there is no return. " User input: 3...9999 s Caution! This function is not visualised in FieldCare! Endress+Hauser 55
10 Function group "display" (09) 10.3 Function "format display" (094) Selects the display format. Selection: decimal 1/16'' decimal The measured value is given in decimal form in the display (e.g. 10.70%). 1/16'' The measured value is given in the display in this format (e.g 5'05-14/16"). This option is only possible for "distance unit" (0C5) -"ft" and "in"! 10.4 Function "no.of decimals" (095) Selection: x x.x x.xx x.xxx 10.5 Function "sep. character" (096) Selection:.,. The decimal place is separated by a point., The decimal place is separated by a comma. 10.6 Function "display test" (097) All display pixels are switched on. If the whole LCD is dark, it is working correctly. 56 Endress+Hauser
11 Function group "diagnostics" (0A) 11 Function group "diagnostics" (0A) In the "diagnostics" function group, you can display and confirm error messages. Type of error Errors that occur during commissioning or measuring are displayed immediately on the local display. If two or more system or process errors occur, the error with the highest priority is the one shown on the display. The measuring system distinguishes between two types of error: A (Alarm): Instrument goes into a defined state (e.g. MAX) Indicated by a constant symbol. (For a description of the codes, ä 76) W (Warning): Instrument continue measuring, error message is displayed. Indicated by a flashing symbol. (For a description of the codes, ä 76) E (Alarm / Warning): Configurable (e.g. loss of echo, level within the safety distance) Indicated by a constant/flashing symbol. (For a description of the codes, ä 76) Endress+Hauser 57
11 Function group "diagnostics" (0A) 11.1 Function "present error" (0A0) The present error is shown using this function. 11.2 Function "previous error" (0A1) The last error presented is shown with this function. 11.3 Function "clear last error" (0A2) " Selection: keep erase Caution! This function can be performed on the display only! 58 Endress+Hauser
11 Function group "diagnostics" (0A) " 11.4 Function "reset" (0A3) Caution! A reset sets the instrument back to the factory settings. This can lead to an impairment of the measurement. Generally, you should perform a basic setup again following a reset. A reset is only necessary: if the instrument no longer functions if the instrument must be moved from one measuring point to another if the instrument is being de-installed /put into storage/installed Entry ("reset" (0A3)): 333 = customer parameters 333 = reset customer parameters This reset is recommended whenever an instrument with an unknown 'history' is to be used in an application: The Micropilot is reset to the default values. The customer specific tank map is not deleted. A linearisation is switched to "linear" although the table values are retained. The table can be reactivated in the "linearisation" (04) function group. List of functions that are affected by a reset: tank shape (002) empty calibr. (005) full calibr. (006) output on alarm (010) output on alarm (011) outp. echo loss (012) ramp %span/min (013) delay time (014) safety distance (015) in safety dist. (016) level/ullage (040) linearisation (041) customer unit (042) diameter vessel (047) range of mapping (052) pres. Map dist (054) offset (057) low output limit (062) fixed current (063) fixed cur. value (064) simulation (065) simulation value (066) format display (094) distance unit (0C5) download mode (0C8) The tank map can also be reset in the "cust. tank map" (055) function of the "extended calibr." (05) function group. This reset is recommended whenever an instrument with an unknown 'history' is to be used in an application or if a faulty mapping was started: The tank map is deleted. The mapping must be recommenced. Endress+Hauser 59
11 Function group "diagnostics" (0A) 11.5 Function "unlock parameter" (0A4) Set-up can be locked and unlocked with this function. 11.5.1 Locking of the configuration mode The Micropilot can be protected in two ways against unauthorised changing of instrument data, numerical values or factory settings: "unlock parameter" (0A4): A value <> 100 (e.g. 99) must be entered in "unlock parameter" (0A4) in the "diagnostics" (0A) function group. The lock is shown on the display by the symbol and can be released again either via the display or by communication. Hardware lock: The instrument is locked by pressing the + and - and E keys at the same time. The lock is shown on the display by the symbol and can only be unlocked again via the display by pressing the + and - and E keys at the same time again. It is not possible to unlock the hardware by communication. All parameters can de displayed even if the instrument is locked. + and - and E press simultaneous The LOCK_SYMBOL appears on the LCD. 60 Endress+Hauser
11 Function group "diagnostics" (0A) 11.5.2 Unlocking of configuration mode If an attempt is made to change parameters when the instrument is locked, the user is automatically requested to unlock the instrument: "unlock parameter" (0A4): By entering the unlock parameter 100 the instrument is released for operation. Hardware-Verriegelung: After pressing the + and - and E keys at the same time, the user is asked to enter the unlock parameter: 100 + and - and E press simultaneous Please enter unlock code and confirm with E. " Caution! Changing certain parameters such as all sensor characteristics, for example, influences numerous functions of the entire measuring system, particularly measuring accuracy. There is no need to change these parameters under normal circumstances and consequently, they are protected by a special code known only to the Endress+Hauser service organization. Please contact Endress+Hauser if you have any questions. 11.6 Function "measured dist." (0A5) Display of measured distance in the selected "distance unit" (0C5). 11.7 Function "measured level" (0A6) Display of measured level in the selected "distance unit" (0C5). Endress+Hauser 61
11 Function group "diagnostics" (0A) 20 ma 100% measured distance 4mA 0% measured level 11.8 Function "detection window" (0A7) Is used to switch the detection window on and off and to reset an existing detection window. If this function is switched on, a window is defined surrounding the current level echo (typical width: 1 to 2.5 m (3.3-8.2 ft); depending on the application parameters). The window always moves togehter with a rising a falling echo. Echos beyond the limits of the window are ignored for a certain time. Selection: off on reset After selection of this option, the current window is reset, the level echo is looked for in the complete measuring range and a new window is defined surrounding the current level echo. 62 Endress+Hauser
11 Function group "diagnostics" (0A) 11.9 Function "application par." (0A8) Displays whether or not one of the settings dependent on the "tank shape" (002), "medium property" (003) and "process cond." (004) application parameters has been changed or not. If, for example, the "output damping" (058) is changed, the "application par." shows "modified". Display: not modified modified After 3 s, the following message appears Endress+Hauser 63
11 Function group "diagnostics" (0A) 64 Endress+Hauser
12 Function group "system parameters" (0C) 12 Function group "system parameters" (0C) 12.1 Function "tag no." (0C0) You can define the tag number with this function. User input: 16 alphanumeric characters 12.2 Function "protocol+sw-no." (0C2) This function shows the protocol and the hardware and software version: Vxx.yy.zz.prot. Display: xx: hw-version yy: sw-version zz: sw-revision 12.3 Function "serial no." (0C4) This function displays the instrument serial number. Endress+Hauser 65
12 Function group "system parameters" (0C) 12.4 Function "distance unit" (0C5) You can select the basic distance unit with this function. Selection: m ft mm inch Dependence m, mm: "format display" (094) can only be "decimal". The units are changed for the following parameters: empty calibr. (005) full calibr. (006) safety distance (015) input level (044) diameter vessel (047) range of mapping (052) cust. tank map (055) offset (057) simulation value (066) measureddist. (0A5) measured level(0a6) 12.5 Function "temperature unit" (0C6) In this function you select the temperature unit. Selection: C F The unit is changed for the following functions Function "measured temp." (030) Function "max. temp. limit" (031) Function "max. meas. temp" (032) 66 Endress+Hauser
12 Function group "system parameters" (0C) 12.6 Function "download mode" (0C8) This parameter defines which values are written to the instrument during a FieldCare configuration download. Selection: parameter only param+cust.map mapping only! Note! This parameter must not be described explicitly in FieldCare. The various possibilities can be selected from the download dialog. After 3 s, the following message appears Endress+Hauser 67
12 Function group "system parameters" (0C) 68 Endress+Hauser
13 Function group "service" (0D) 13 Function group "service" (0D) This function group is reserved for service purposes only. Endress+Hauser 69
13 Function group "service" (0D) 70 Endress+Hauser
14 Signal evaluation 14 Signal evaluation 14.1 Envelope curve The echo of an ultrasonic impulse does not only contain the desired echo from the product surface, but also interference echoes (e.g. from tank fittings or multiple reflections). In order to identify these echoes one plots the logarithmic amplitude of the echo versus the time-of-flight of the ultrasonic impulse. This plot is called envelope curve. sending pulse with reverberation time y amplitude interference echo caused by installations interference echo caused by agitator interference echoes caused by installations level echo x time-of-flight The envelope curve can be displayed in the "envelope curve" (0E) function group (see Page 52). In the FieldCare the envelope curve may also be displayed in the "envelope" menu: Endress+Hauser 71
14 Signal evaluation 14.2 Interference echo suppression (tank mapping) The interference echo suppression of the instrument makes sure that interference echoes are not interpreted as the level echo by fault. In order to carry out the interference echo suppression one must record a time-of-flight dependent threshold (TDT), which is also called the tank map. All maxima of the envelope curve which are situated below the TDT are discarded by the signal evaluation procedures. 0 [db] 20 40 customer map operation in basic setup" and "extended calibration 60 interference echoes 80 level echo 100 120 envelope curve with reflections / echoes in the tank [m] It is recommended to record the tank map when the vessel is as possible empty. Then, the map will inclue all echoes except the level echo. But even, if it is not possible to empty the vessel during the commissioning of the instrument, you should perform the map. In this case it is recommended to repeat the record of the mapping at a later time - when the vessel is as possible empty. The tank map is recorded in the function group "extended calibration" (05). Select the option "mapping" in the "selection" (050) function. 72 Endress+Hauser
14 Signal evaluation 14.3 Floating Average Curve (FAC) 0 [db] 20 40 FAC (Floating Average Curve) 60 80 100 120 envelope curve with reflections / echoes in the tank [m] The function of the Floating Average Curve (FAC) is similar to the interference echo suppression. The main difference is, that the tank map is recorded only once whilst the FAC adjusts itself continuously to the changing measuring conditions. By this procedure changes of the interference echoes (e.g. by build-up) can be compensated for. In contrast to the tank map, the FAC can only register small interference echoes. The FAC is always used in the signal evaluation, even if the tank map has been deactivated. In the envelope curve, the maximum with the largest distance to the FAC is interpreted as the level echo. Endress+Hauser 73
14 Signal evaluation 74 Endress+Hauser
15 Trouble shooting 15 Trouble shooting 15.1 System error messages Current error Errors which the instrument detects during commissioning or operation are displayed: In the "measured value" (000) function In the "diagnostics" (0A) function group in the "present error" (0A0) function (only the highest priority error is displayed; in the case of multiple errors, you can scroll between the different error messages by pressing + or -.) Last error The last error is displayed in the "diagnostics" (0A) function group in the "previous error" (0A1) function. This display can be deleted in the "clear last error" (0A2) function. Types of errors Type of error Symbol Meaning Alarm (A) Continuous The output signal assumes a value which can be set using the "output on alarm" (010) function: MAX: 110%, 22mA MIN: -10%, 3.8mA Hold: last value is on hold User-specific value Warning (W) Alarm/Warning (E) The device continues measurement. An error message is displayed. Flashing You can define whether the error should behave as an alarm or as a warning. Endress+Hauser 75
15 Trouble shooting Error codes Code A101 A102 A110 A152 A160 Error description (on the display) checksum error Action Reset; If alarm still present after reset, replace electronics W103 initialising If the message does not disappear after several seconds, replace the electronics A106 downloading Wait Message disappears after load sequence A111 A113 A114 A115 A121 A125 A155 A164 A171 electronics defect Reset; Check system for EMC, improve as necessary If alarm still present after reset, replace electronics A116 download error Check connection Restart download W153 initialising Wait a few seconds; if error is still displayed, switch the power off and on again A231 sensor defect Check connection, if necessary replace HF module or electronics A281 interruption temperature sensor Exchange sensor A502 Sensor type not detected Exchange sensor and/or electronics A521 new sensor type detected Reset W511 no factory calibration Carry out factory calibration W512 recording of mapping Alarm disappears after a few seconds W601 linearisation curve not monotone Correct table (enter monotonously increasing table) W611 W621 less than 2 linearisation points simulation on Enter additional value pairs Switch simulation mode off ["output" (06) function group, "simulation" (065) function] E641 no usable echo Check basic calibration (see Page 26) E651 level in safety distance - risk of overspill Sensor overtemperature A661 A671 Linearisation incomplete Activate linearisation table W681 W691 current out of range Error disappears when the level leaves the safety distance. Possibly reset the lock. ["safety settings" (01) function group, "ackn. alarm" (017) function] Carry out basic calibration; check linearisation Filling noise detected, level ramp is active 76 Endress+Hauser